Lasting-pinchers



(No Model.) F. W. .WHITGHPR,-

LASTING PINOHBRS.

Nd. 442,844. Patented Dec. 16, 1890.

I Nrrnn TATES ATENT Enron,

FRANK \V. \VIIITGHER, OF BOSTON, MASSACHUSETTS.

LASTlNG-PINCHERS.

SPECIFICATION forming part of Letters Patent No. 442,844, dated December16, 1890.

Application filed February 27, 1890. Serial No. 341,967. (No model.)

To all whom it may concern:

Be it known that I, FRANK W. HITOHER, of Boston, county of Suffolk,State of Massachusetts, have invented certain new and usefulImprovements in Lasting Pinchers, of which the following is aspecification, reference being had to the drawings accompanying andforming a part hereof, in which Figure 1 is a side view of a pair ofpinchers, partially broken away to show my improvement with greaterclearness. Fig. 2 is a similar view showing a modification.

As is well known to those skilled in the art, the hammer of a pair oflasting-pinchers serves as the fulcrum when the pinchers are used as alever in drawing the upper into place. In some cases it is desirablethat this hammer head or fulcrum should be nearer the bite of thepinchers than in other cases, and it is thus desirable to have thehammer-head so constructed that it may be shifted or adjusted relativelyto the bite of the pinchers. A pair of lasting-pinchers having such anadjustable hammer-head is not broadly new; but those hitherto made, sofar as known to me, are objectionable, in that the method of securingthe hammer-head in order to gain this adj ustmenthas necessitated anumber of parts which are of comparatively costly construction, whichare liable to loosen when the hammer is used as a hammer, and theconstruction of the hammer-head has been such as to weaken it. To avoidthese objections is the chief object of my present invention, which ishereinafter more fully described, and which will be readily understoodfrom the following description, in which reference is made to theaccompanying drawings.

The under jaw of the pinchers is shown at A, and is so shaped infront-of the pivot 11 of the pinchers as to afford a seat for the hammerbetween the pivot Z) and the bite of the pinchers. This portion of thejaw to which the hammer is secured is slotted, as shown at c, with alengthwise slot to receive the shank (Z of the hammer head. The slot hasparallel sides and end walls, and is adapted to receive a shank, such ascl, closely fitting said slot laterally, and which is square or rectan-The shank cl is pref- 5o the shank d, and which thus serves to hold theham mer-head securely in a given position in the slot 0.

The upper jaw g of the pinchers is preferably arched upwardly, as shown,to afford a suitable space for the nut and for a wrench to tighten orloosen the nut. By this construction the hammer-head has a firm bearingagainst the lower side of the jaw A, and may be readily adjusted towardor from the bite of the pinchers whenever desired. By making the shank drectangular in cross-section and increasing its size the liability ofthe hammer-heads breaking off at the point where it joins the shank isreduced to a minimum, and a very strong, easilyadj usted, andcheaply-made pinchers with an adjustable hammerhead is obtained.

As will be obvious, the construction may be v modified, as shown in Fig.2, without essentially changing the character of my invention. In thismodification the shank d is not integral with the hammer-head, butconsists of a headed bolt having screw-threads at its lower end, whichare received in a threaded hole or recess in the top of the hammer-head,and onto which the hammer-head may be screwed by either turning thehammer-head if the bolt d is rectangular in cross-section, or by turningthe bolt if the bolt is circular in cross-section.

\Vhat I claim is- 1. A pair of lasting-pinchers having a lower j awA,provided with a slot clengthwise thereof and between the pivot of thepinchers and the bite of the same, said slot having end walls, as shown,a ham mer-head'secured to said lower jaw by means of a bolt or shankpassing through said slot and filling the same laterally, and saidpinchers having a space between the slotted lower jaw A and the upperjaw g to receive the top of the said shank, substantially as shown anddescribed.

2. The eoinbination, with a pair of lasting head and shank in place,substantially as pinchers, of the jaw A, having a slot; clengthshown anddescribed. wise thereof and having end Wa11s,as shown,

I r T v V r 1 7 h a hammer-head having a shank (Z, rectangn- FRANIWHHCHER' 5 lar in cross-section and closely fitting said Witnesses:

slot laterally, but adapted to move therein, WVM. A. MACLEOD,

and a screw-nut f for securing said hammer- O E. NOLTE.

